Trait rand::distributions::Weight

pub trait Weight: Clone {
    const ZERO: Self;

    // Required method
    fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>;
}

Bounds on a weight

See usage in WeightedIndex.

Required Associated Constants

const ZERO: Self

Representation of 0

Required Methods

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

Checked addition

• Result::Ok: On success, v is added to self
• Result::Err: Returns an error when Self cannot represent the result of self + v (i.e. overflow). The value of self should be discarded.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl Weight for f32

const ZERO: Self = 0f32

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for f64

const ZERO: Self = 0f64

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for i8

const ZERO: Self = 0i8

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for i16

const ZERO: Self = 0i16

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for i32

const ZERO: Self = 0i32

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for i64

const ZERO: Self = 0i64

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for i128

const ZERO: Self = 0i128

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for isize

const ZERO: Self = 0isize

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for u8

const ZERO: Self = 0u8

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for u16

const ZERO: Self = 0u16

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for u32

const ZERO: Self = 0u32

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for u64

const ZERO: Self = 0u64

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for u128

const ZERO: Self = 0u128

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

impl Weight for usize

const ZERO: Self = 0usize

fn checked_add_assign(&mut self, v: &Self) -> Result<(), ()>

Implementors